KR101813686B1 - Motor drive wheelbarrow - Google Patents

Abstract

The present invention relates to an electric unidirectional wheelbarrow capable of performing forward and backward traveling according to a tilt in a manual or automatic running mode and a manual or automatic running mode.
Wherein the unicycle electric cart includes: a loading part composed of a loading box; A body frame part supporting the loading part and composed of a body frame on which a controller and a display are mounted; An outer wheel having a wheel mounted on a bottom surface of the body frame; A driving unit connected to the shaft of the outer wheel to provide a driving force to the outer wheel; And a control unit for controlling the driving unit by controlling the driving unit in accordance with the forward and backward inclination by detecting the inclination of the front and back of the body frame, so as to balance the forward and backward directions during traveling of the unicycle, And provides an effect of significantly improving the safety and efficiency of the work.

Description

{MOTOR DRIVE WHEELBARROW}

The present invention relates to a uni-directional hand wheel, and more particularly, to an electric uni-directional hand wheel which is capable of manual, electric and automatic travel, and is capable of advancing and reversing traveling according to a tilt in an electric or automatic traveling mode.

Handcarts are the most widely used transport equipment to extend human physical strength and are the most widely used products in agriculture / industry. Small hand carts are vehicles that continuously generate demand in the industrial field due to many merits of utilization of narrow space compared to medium and large transportation machines. It is a necessity of the farm household because it is free from energy consumption for the driving and can be used freely in narrow passage.

Examples of such unicycle carts include a unidirectional clutch incorporated in a chain sprocket of a unicycle wheel shaft coupled with a speed reducer output of a motor disclosed in Korean Patent Laid-Open Publication No. 2011-0004833, and a unidirectional clutch , Korean Patent Laid-Open Publication No. 2011-0070965, which is equipped with a hose rewinder, a semi-automatic stock sprayer for carrying out traveling using a torque limiter of Korean Patent Laid-Open Publication No. 2012-0081061, and Korean Patent Laid- And a unidirectional electric cart for controlling travel using a torque limit of -0086683.

However, such conventional techniques are difficult to balance, and there is a problem that a safety accident such as an injury occurs to a worker due to insufficient operation of a worker at a high speed traveling.

Korean Patent Publication No. 2011-0004833 Korean Patent Laid-Open Publication No. 2011-0070965 Korea Patent Publication No. 2012-0081061 Korea Patent Publication No. 2012-0086683

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a method and apparatus for balancing the forward and backward directions of a freestanding wheelbarrow, And to provide an electric unicorn handset.

According to an aspect of the present invention, there is provided an electric uni-directional hand-

A loading section comprising a loading box;

A body frame part supporting the loading part and composed of a body frame on which a controller and a display are mounted;

An outer wheel having a wheel mounted on a bottom surface of the body frame;

A driving unit connected to the shaft of the outer wheel to provide a driving force to the outer wheel; And

And a control unit for detecting the inclination of the front and rear of the body frame and controlling the driving unit according to the back and forth inclination.

Wherein,

A front-back tilt sensor for detecting a back-and-forth tilt of the body frame portion; And

And a front-to-rear tilt controller for outputting a driving unit driving signal for performing forward, backward, or stop driving according to the direction of the tilt detected by the front-rear tilt sensor to control the driving unit.

The electric unicorn hand-

An auxiliary wheel mounted on a bottom surface of the body frame to maintain a balance during stoppage; And

The auxiliary wheel unit may further include a auxiliary wheel unit that detects a ground contact of the auxiliary wheel and outputs a driving stop signal, and outputs a driving signal when the auxiliary wheel is separated from the ground.

The auxiliary wheel portion

And a front wheel auxiliary wheel unit including a front wheel auxiliary wheel and a front wheel auxiliary wheel switch for detecting a ground contact of the front wheel auxiliary wheels and outputting a driving stop signal and outputting a traveling signal when the front wheel auxiliary wheels are separated from the ground surface .

Wherein,

And to output a driving unit driving signal for controlling the driving unit to stop driving the driving unit when receiving the driving stop signal and driving the driving unit upon receiving the driving signal.

The auxiliary wheel portion

And a rear wheel auxiliary wheel unit including a rear wheel auxiliary wheel, a rear wheel auxiliary wheel switch for sensing the ground contact of the rear wheel auxiliary wheel and outputting a driving stop signal, and outputting a driving signal when the rear wheel auxiliary wheel is separated from the ground surface .

Wherein,

And to output a driving unit driving signal for controlling the driving unit to stop driving the driving unit when receiving the driving stop signal and driving the driving unit upon receiving the driving signal.

The driving unit driving signal includes:

And may be a signal for performing the forward, backward, or stop driving of the driving unit according to the back and forth inclination of the body frame unit.

The manipulator,

handle;

A display unit for displaying a driving state and being attached to the handle so as to select manual, electric and automatic operation;

A clutch lever attached to the handle to control transmission and blocking of the driving force of the driving portion to the outer wheel portion; And

And a control lever attached to the handle so as to control forward and backward travel.

In the manual operation,

And may be driven by the work force of the operator in a state in which the driving of the driving unit is stopped.

In the automatic operation,

The control unit controls the driving unit by stopping the angular range of the angles of the angles of the angular range exceeding the predetermined angular range or by performing the backward driving of less than the predetermined angular range by stopping the angular ranges of both sides perpendicular to the paper surface in accordance with the inclination of the body frame in the direction perpendicular to the paper, . ≪ / RTI >

 In the electric operation,

And may be an operation mode in which the control unit controls the driving unit to perform the forward or backward travel according to forward / backward control of the steering lever.

The present invention having the above-described configuration provides an effect of balancing the longitudinal direction of the unicycle at the time of traveling and automatically operating according to the work operation of the worker, thereby remarkably improving the safety and efficiency of the work.

1 is a view of an electric unicorn according to an embodiment of the present invention;
2 is a block diagram of the configuration of the control unit 50 of Fig.
3 is a flowchart showing driving of the electric uni-directional hand basket 1;

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The embodiments according to the concept of the present invention can make various changes and have various forms, so that specific embodiments are illustrated in the drawings and described in detail in this specification or the application. It is to be understood, however, that the intention is not to limit the embodiments according to the concepts of the invention to the specific forms of disclosure, and that the invention includes all modifications, equivalents and alternatives falling within the spirit and scope of the invention. Also, the word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any aspect described herein as "exemplary " is not necessarily to be construed as preferred or advantageous over other aspects.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises ", or" having ", or the like, specify that there is a stated feature, number, step, operation, , Steps, operations, components, parts, or combinations thereof, as a matter of principle.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings showing embodiments of the present invention.

Fig. 1 is a diagram of an electric uni-directional handheld 1 according to an embodiment of the present invention, and Fig. 2 is a block diagram of the control unit 50 of Fig.

1, the electric uni-directional hand cart 1 includes a loading section 10 constituted by a loading box 11, a body frame 21 supporting a loading section 10 and having a controller 22 and a display 24 mounted thereon A body frame part 20 constituted by the body 31 and a wheel 31 mounted on the bottom surface of the body frame 21 and an outer wheel 30 having a wheel 31 mounted on the bottom surface of the body frame 21, A control unit 50 for controlling the driving unit 40 according to the forward and backward inclination of the body frame 21 and controlling the driving of the body frame 21 and the power source unit 60.

The manipulator 22 includes a display 23 that displays a driving state and a display 24 attached to the handle so as to select manual, electric, and automatic operation. The controller 24 is attached to the handle 23, A clutch lever 25 for controlling the transmission and blocking of the driving force to the outer wheel 30 and a steering lever 26 attached to the handle 23 for controlling forward and backward travel.

The manual operation is a driving mode in which driving of the driving unit 40 is stopped and driven by the workforce of the operator. The automatic operation is performed by stopping the fixed angle ranges on both sides in the vertical direction on the ground according to the inclination with respect to the direction perpendicular to the paper surface of the body frame 21, advancing beyond a certain angle range, 50) controls the driving unit (40). Next, the electric operation is an operation mode in which the control unit 50 controls the driving unit 40 to perform the forward or backward travel according to the forward / backward control of the steering lever 26. [

The driving unit 40 includes a motor, a motor driver, an inverter, and the like. The driving unit 40 drives the motor in such a manner that a voltage applied to the motor is changed according to a driving unit driving signal of the control unit 50 Thereby providing driving force.

2, the control unit 50 controls the forward / backward tilt sensor 51 and the forward / backward tilt sensor 51 to detect the forward / backward inclination of the body frame unit 20, And a forward / backward slope controller 53 for controlling the driving unit 40 by outputting a driving unit driving signal for driving the driving unit 40.

The front-back tilt sensor 51 can detect the inclination of the body frame 21 of the unicycle in the front-rear direction, and can be composed of a gyro sensor, an acceleration sensor, a tilt sensor, or the like.

The control unit 50 controls the drive unit 40 to move forward and backward in accordance with the input signal of the control lever 26 during the automatic operation according to the input signal of the longitudinal tilt sensor 51 during the automatic operation.

Further, the unicycle wheel barrel (1) is mounted on the bottom surface of the body frame to maintain balance during stoppage; And a subsidiary wheel unit including a subsidiary wheel switch for detecting a ground contact of the subsidiary wheel and outputting a travel stop signal, and for outputting a travel signal upon separation from the ground.

In this case, the auxiliary wheel unit includes a front wheel auxiliary wheel unit 70 and a rear wheel auxiliary wheel unit 80.

The front wheel auxiliary wheel unit 70 senses the ground contact of the front wheel auxiliary wheels 71 and the front wheel auxiliary wheels 71 to output a driving stop signal and outputs a driving signal when the wheel is separated from the ground surface of the front wheel auxiliary wheels 71 And a front wheel auxiliary wheel switch 72 for outputting.

The rear wheel auxiliary wheel unit 80 senses the ground contact of the rear wheel auxiliary wheel 81 and the rear wheel auxiliary wheel 81 and outputs a driving stop signal. When the rear wheel auxiliary wheel unit 80 is separated from the ground of the rear wheel auxiliary wheel 81, And a front wheel auxiliary wheel switch 82 for outputting the signal.

In this case, the controller 50 is configured to stop the driving of the driving unit 40 when receiving the driving stop signal and output a driving unit driving signal to drive the driving unit 40 upon receipt of the driving signal. At this time, the driving unit driving signal includes a signal for performing the forward, backward, or stop driving of the driving unit 40 according to the forward and backward inclination of the body frame unit 21.

The power supply unit 60 may include a battery such as an automobile battery.

3 is a flowchart showing driving of the electric uni-directional hand basket 1;

As shown in FIG. 3, the controller 50 determines whether the operation mode is a manual operation, an automatic operation, or an electric operation mode (S10).

When the operation mode is the manual operation mode, the control unit 50 disconnects power transmission between the drive unit 40 and the outer wheel 31. Accordingly, the user is allowed to perform forward and backward manipulation of the electric uni-directional handheld 1 with a force like a general unicorn handset (S20).

In contrast, in the case of the automatic operation mode, the control unit 50 determines whether the body frame 21 measured by the longitudinal tilt sensor 51 is in a predetermined angle range (-θT ?? ? T) (S40). If it is determined that the angle is within the predetermined angle range, the motor is stopped (S50). Alternatively, it is determined whether the front-back inclination of the body frame 21 has a value larger than a predetermined angle range or has a small value (60). When the forward / backward slope has a value larger than the predetermined angle range, a voltage proportional to the front / rear inclination? Is applied to the driving unit 40 to drive the electric uni-directional hand 1 forward at a speed proportional to? Alternatively, when the front-back inclination [theta] has a value smaller than the predetermined angle range, the electric uni-directional handwheel 1 is driven backward at a speed proportional to the front-back inclination [theta] (S80).

When the stop signal is received from the current auxiliary wheel switch 72 or the forward common wheel switch 82 in accordance with the ground contact of the front wheel auxiliary wheel 71 or the rear wheel auxiliary wheel 81, When the stop command inputted from the user is received, the driving of the driving unit 50 is stopped and the processing is terminated (S90).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be apparent to those skilled in the art that various modifications may be made without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1: Electric unilateral cart 10:
20: Vida frame part 21: Body frame
22: Pilot 23: Handle
24: Display 25: Clutch lever
30: unicycle part 31: unicycle
40: driving unit 50:
60: power supply unit 70: front wheel auxiliary wheel unit
71: front wheel auxiliary wheel 72: front wheel auxiliary wheel switch
80: rear wheel auxiliary wheel portion 81: rear wheel auxiliary wheel
82: Rear wheel auxiliary switch

Claims (12)

A loading section comprising a loading box;
A body frame part supporting the loading part and composed of a body frame on which a controller and a display are mounted;
An outer wheel having a wheel mounted on a bottom surface of the body frame;
A driving unit connected to the shaft of the outer wheel to provide a driving force to the outer wheel; And
A front / rear tilt sensor for detecting a front / rear tilt of the body frame portion, and a front / rear tilt controller for controlling a driving portion by outputting a driving portion driving signal for performing forward, backward or stop driving according to the direction of the tilt detected by the front / rear tilt sensor And a control unit controlling the driving unit according to the forward and backward inclination by detecting the front and rear inclination of the body frame,
The manipulator,
handle;
A display unit for displaying a driving state and being attached to the handle so as to select manual, electric and automatic operation;
A clutch lever attached to the handle to control transmission and blocking of the driving force of the driving portion to the outer wheel portion; And
And a control lever attached to the handle to control forward and backward travel,
Wherein,
Wherein when the manual operation is selected, the control unit controls the driving unit to be driven by the work force of the operator in a state in which the driving unit is stopped,
Controls the driving unit to perform forward or backward travel according to forward / backward control of the steering lever when the electric operation is selected,
When the automatic operation is selected, stopping of the constant angle ranges on both sides perpendicular to the paper according to the inclination with respect to the direction perpendicular to the paper surface of the body frame, advancing the angular range over a certain angle range, So as to control the drive unit so as to perform the travel control including forward, reverse, or stop rather than auxiliary travel to the running of the cart.
delete The electric uni-directional hand wheel of claim 1,
An auxiliary wheel mounted on a bottom surface of the body frame to maintain a balance during stoppage; And
And a auxiliary wheel unit for outputting a driving stop signal by sensing the ground contact of the auxiliary wheel and outputting a driving signal upon separation from the ground.
4. The apparatus according to claim 3,
And a front wheel auxiliary wheel unit including a front wheel auxiliary wheel and a front wheel auxiliary wheel switch for detecting a ground contact of the front wheel auxiliary wheels and outputting a driving stop signal and outputting a traveling signal when the front wheel auxiliary wheels are separated from the ground surface Electric unicorn cart.
5. The apparatus of claim 4,
And to output a driving unit driving signal for controlling the driving unit to stop driving the driving unit when the traveling stop signal is received and to drive the driving unit upon receiving the traveling signal.
4. The apparatus according to claim 3,
And a rear wheel auxiliary wheel unit including a rear wheel auxiliary wheel, a rear wheel auxiliary wheel switch for sensing the ground contact of the rear wheel auxiliary wheel and outputting a driving stop signal, and outputting a driving signal when the rear wheel auxiliary wheel is separated from the ground surface Electric unicorn cart.
7. The apparatus of claim 6,
And to output a driving unit driving signal for controlling the driving unit to stop driving the driving unit when the traveling stop signal is received and to drive the driving unit upon receiving the traveling signal.
The driving method according to claim 7,
Wherein the signal is a signal for performing the forward, backward, or stop driving of the driving unit according to the front-back inclination of the body frame unit.
delete delete delete delete

Images